DAF CF65, CF75, CF85 Series . Manual - part 473

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4-19

Removal and installation

XE ENGINE FUEL SYSTEM

CF65/75/85 series

4

8

4.11 REMOVAL AND INSTALLATION, FUEL PREFILTER/WATER SEPARATOR 

FILTER ELEMENT

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When removing the fuel prefilter/

water separator, a quantity of fuel 

will escape. Collect the fuel to avoid 

the risk of fire.

Version: Racor

Removing the fuel prefilter/water separator 
filter element
1.

Drain the fuel from the filter element by 

unscrewing the bleed plug (2) and opening 

the drain plug (8).

2.

If fitted, disconnect the water sensor (6) and 

the heating element (7) connectors.

3.

Remove the filter element (4) and the bottom 

cover (5). Clean the O-ring seal. 

Installing the fuel prefilter/water separator 
filter element
1.

Apply a film of engine oil to the O-ring and 

the new sealing ring.

2.

Fit the bottom cover (5) onto the new filter 

element (4).

3.

Fit the bottom cover (5) together with the new 

filter element (4) to the filter housing (3).

4.

Hand-tighten the new filter.

5.

If fitted, attach the water sensor and heating 

element connectors.

6.

Check whether the drain plug (8) is tight.

7.

Open the air-bleeder plug (2) a couple of 

turns.

8.

Operate the primer pump (1) until fuel comes 

out of the air-bleeder plug.

9.

Close the air-bleeder plug (2).

10. Start the engine and check for leaks. If 

necessary, retighten the filter element (4) by 

hand.

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XE ENGINE FUEL SYSTEM

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 200324

Removal and installation

8

CF65/75/85 series

4

Version: Mann + Hummel

Removing the fuel prefilter/water separator 
filter element
1.

Drain the fuel from the filter element by 

unscrewing the bleed plug (2) and opening 

the drain plug (6).

2.

If fitted, unplug the connectors of the water 

sensor and the heating element.

3.

Remove the filter element (4) together with 

the bottom cover (5) and clean the O-ring 

seal. 

Installing the fuel prefilter/water separator 
filter element
1.

Apply a film of engine oil to the O-ring and 

the new sealing ring.

2.

Fit the bottom cover (5) onto the new filter 

element (4).

3.

Fit the bottom cover (5) together with the new 

filter element (4) to the filter housing (3).

4.

Hand-tighten the new filter.

5.

If fitted, attach the water sensor and heating 

element connectors.

6.

Check whether the drain plug (6) is tight.

7.

Open the air-bleeder plug (2) a couple of 

turns.

8.

Operate the primer pump (1) until fuel comes 

out of the air-bleeder plug.

9.

Close the air-bleeder plug (2).

10. Start the engine and check for leaks. If 

necessary, retighten the filter element (4) by 

hand.

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5-1

Disassembly and assembly

XE ENGINE FUEL SYSTEM

CF65/75/85 series

4

8

5. DISASSEMBLY AND ASSEMBLY

5.1 DISASSEMBLY AND ASSEMBLY, PUMP HOUSING

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When disassembling the pump 

housing, fuel will escape. Collect 

this fuel, bearing in mind the risk of 

fire.

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Dirt in the system can lead to 

significant damage to fuel system 

components.

Disassembling the pump housing
1.

Remove the pump housing. See "Removal 

and installation".

Note:

If after removal the pump units are not 

replaced in the same position, they must be 

re-calibrated.

2.

Remove the pump units. See "Removal and 

installation".

3.

Remove the tappet rollers.

4.

Remove the fuel lift pump. See "Removal 

and installation".

5.

Remove the cover and check the O-ring. If 

necessary, replace the O-ring.

6.

Remove the pulse disc from the pump 

camshaft.

7.

Remove the locking plate from the pump 

camshaft.

Note:

When removing the sealing plates, an 

amount of lubricating oil will escape. Collect 

this lubricating oil.

8.

Remove the sealing plates and the gaskets.

9.

Remove the pump camshaft by manoeuvring 

it vertically out of the pump housing.

10. Remove the slide bearings using the special 

tools (DAF no. 1329444) and 

(DAF no. 0535626).

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XE ENGINE FUEL SYSTEM

5-2

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Disassembly and assembly

8

CF65/75/85 series

4

Assembling the pump housing

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When fitting the front bearing shell it 

is important that the oil bore in the 

bearing housing aligns with the hole 

in the slide bearing.

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